Int 7C/AX=0016h

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SK-UPPS Data Link Interface API - DLI 2.8+ - DRIVER I/O CONTROL

AX = 0016h
DX = subfunction; bits 14-15 specify direction of I/O:
00 no data at all (ES:BX undefined)
01 driver -> application (GET)
10 application -> driver (SET)
11 both directions (GET/SET)
ES:BX -> I/O buffer (optional)
CX = size of buffer (if ES:BX valid)

Return:
AX = completion code; defined by OEM

Program: SK-UPPS is the Schneider & Koch Universal Portable Protocol Stack, which provides an API on top of its Data Link Interface, allowing the use of any of several network transport layers

Notes: Not supported by all DLIs (will return AX=FFFFh if not supported). Subfunction codes are defined by OEMs

See Also: AX=0001h

Category: Network - Int 7Ch - S

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